Accounting for your income for income tax purposes differs at times from accounting for financial purposes. This section discusses some of the more common differences that may affect business
transactions.

Figure your business income on the basis of a tax year and according to your regular method of accounting (see
chapter 2). If the sale of a product is an income-producing factor in your business, you usually have to use inventories to clearly show your income. Dealers in real estate are not allowed to use inventories. For more information on inventories, see
chapter 2.

You must use the chosen method every year for all your purchase discounts.

If you use the second method, the credit balance in the account at the end of your tax year is business income. Under this method, you do not reduce the cost of goods sold by the cash discounts you received. When valuing your closing inventory, you cannot reduce the invoice price of merchandise on hand at the close of the tax year by the average or estimated discounts received on the merchandise.

These are reductions from list or catalog prices and usually are not written into the invoice or charged to the customer. Do not enter these discounts on your books of account. Instead, use only the net amount as the cost of the merchandise purchased. For more information, see
Trade discounts
in chapter 6.

If the buyer of your property places part or all of the purchase price in escrow, you do not include any part of it in gross sales until you actually or constructively receive it. However, upon completion of the terms of the contract and the escrow agreement, you will have taxable income, even if you do not accept the money until the next year.

If you receive insurance or another type of reimbursement for a casualty or theft loss, you must subtract it from the loss when you figure your deduction. You cannot deduct the reimbursed part of a casualty or theft loss.

For information on casualty or theft losses, see Publication
547, Casualties, Disasters, and Thefts.